I want to use two across strips on both edge of an area to survey with an UAV to rise the aerotriangulation accuracy using direct georreferencing by reducing the control points.

My questions is if is there any way to inform the software that there are transversal strips together with normal and parallel strips? Otherwise I need manual check the tie points by irregular strips or work hard to get a good pre-AT, doesn´t it?

I want to use two across strips on both edge of an area to survey with an UAV to rise the aerotriangulation accuracy using direct georreferencing by reducing the control points.

My questions is if is there any way to inform the software that there are transversal strips together with normal and parallel strips? Otherwise I need manual check the tie points by irregular strips or work hard to get a good pre-AT, doesn´t it?

Thanks

Hello
You can set irregular for strips with the opposite direction and adjust it with bundle adjustment.
And you can check tie points with AT report

I want to use two across strips on both edge of an area to survey with an UAV to rise the aerotriangulation accuracy using direct georreferencing by reducing the control points.

My questions is if is there any way to inform the software that there are transversal strips together with normal and parallel strips? Otherwise I need manual check the tie points by irregular strips or work hard to get a good pre-AT, doesn´t it?

Do you think is enough to flight two across strips on the edge of the area or better one across strips every four or five regular strips models? On UAV flights there is a lot of pictures

Due the law on my country Spain is mandatory low flight height for UAV 400 ft - 120 meters and are not many tie points on rural farming areas, so I think to use across strips with direct georreferencing using low cost MEMS IMUs and GNSS single frequency on RTKlib could be a good way to work and not expensive, don´t you?

Do you think is enough to flight two across strips on the edge of the area or better one across strips every four or five regular strips models? On UAV flights there is a lot of pictures

Due the law on my country Spain is mandatory low flight height for UAV 400 ft - 120 meters and are not many tie points on rural farming areas, so I think to use across strips with direct georreferencing using low cost MEMS IMUs and GNSS single frequency on RTKlib could be a good way to work and not expensive, don´t you?

Best regards

You can use info from mems like exterior orietation in PHOTOMOD. Of course it will be better for processing. https://cloud.mail.ru/public/626V/3io1gmVf3
For better procces you should delete images to create block approx. with 70/50% overlaps. (in/between strips)